/* style.css - Updated with Placeholder Alignment Fix */

@import url('https://fonts.googleapis.com/css2?family=Nunito:wght@400;700;800;900&display=swap');

:root {
    --bg-color-light: #F0F8FF;
    --bg-color-medium: #E0F2FE;
    --bg-color-dark: #B9E2FB;
    --primary-pink: #FF85C0;
    --button-blue: #5DA9E9;
    --button-green: #77DDBB;
    --button-orange: #FFB347;
    --button-red: #FF6B6B;
    --button-purple: #C390D4;
    --text-dark: #4A4A4A;
    --text-light: #FFFFFF;
    --text-pink-header: #E95BA8;
    --removal-red: #ff4d4d;
    
    /* Block Colors */
    --block-c1: #FF7F7F;  /* Red */
    --block-c2: #7FBFFF;  /* Blue */
    --block-c3: #7FFF7F;  /* Green */
    --block-c4: #FFBF7F;  /* Orange */
    --block-c5: #AA7FFF;  /* Purple */
    --block-c6: #F7E56F;  /* Yellow */
    --block-c7: #77DDBB;  /* Teal */
    --block-c8: #FF85C0;  /* Pink */
    
    --border-radius-main: 20px;
    --border-radius-buttons: 30px;
    --border-radius-blocks: 10px;
    --border-radius-studs: 50%;
    --shadow-soft: 0 4px 15px rgba(0, 0, 0, 0.1);
    --shadow-strong: 0 6px 20px rgba(0, 0, 0, 0.15);
    --shadow-inset: inset 0 2px 4px rgba(0, 0, 0, 0.06);
    --lego-unit-size: 45px;
    --lego-height: 55px;
    --stud-diameter: 14px;
    --stud-height: 4px;
    --stud-border-width: 1px;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Nunito', sans-serif;
    background-image: linear-gradient(135deg, var(--bg-color-light) 0%, var(--bg-color-medium) 50%, var(--bg-color-dark) 100%);
    background-repeat: no-repeat;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 20px;
    color: var(--text-dark);
    overflow-x: hidden;
}

.game-container {
    max-width: 700px; 
    width: 100%;
    background-color: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(10px);
    border-radius: var(--border-radius-main);
    box-shadow: var(--shadow-strong);
    padding: 30px 25px;
    position: relative;
    border: 3px solid rgba(255, 255, 255, 0.9);
}

.game-actions {
    margin-top: 20px;
    display: flex;
    justify-content: center;
}

#report-btn {
    font-family: 'Nunito', sans-serif;
    font-weight: 800;
    font-size: 1.1em;
    padding: 10px 25px;
    border-radius: var(--border-radius-buttons);
    border: none;
    background-color: var(--button-purple);
    color: var(--text-light);
    cursor: pointer;
    box-shadow: var(--shadow-soft);
    transition: all 0.2s ease;
}
#report-btn:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-strong);
}

.game-header {
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 10px;
    position: relative;
    padding-top: 40px;
}

.unicorn-main {
    position: absolute;
    left: -50px;
    top: -60px;
    width: 150px;
    z-index: 10;
}

.rainbow-corner {
    position: absolute;
    right: -30px;
    top: -40px;
    width: 120px;
    z-index: 5;
}

.game-title {
    font-size: 2.8em;
    font-weight: 900;
    color: var(--text-pink-header);
    letter-spacing: 1px;
    line-height: 1.1;
    text-align: center;
    position: relative;
    z-index: 11;
}

.language-switcher {
    position: absolute;
    top: 20px;
    right: 20px;
    display: flex;
    gap: 8px;
    z-index: 200;
}

.language-btn {
    width: 40px;
    height: 28px;
    border: 2px solid var(--button-purple);
    border-radius: 6px;
    cursor: pointer;
    transition: all 0.3s ease;
    overflow: hidden;
    background-color: var(--text-light);
    box-shadow: var(--shadow-soft);
}
.language-btn:hover {
    transform: scale(1.1);
    border-color: var(--primary-pink);
}
.language-btn.active {
    border-color: var(--primary-pink);
    border-width: 3px;
    box-shadow: 0 0 10px var(--primary-pink);
}

.flag-us { background: linear-gradient(to bottom, #B22234 7.69%, white 7.69%, white 15.38%, #B22234 15.38%, #B22234 23.07%, white 23.07%, white 30.76%, #B22234 30.76%, #B22234 38.45%, white 38.45%, white 46.14%, #B22234 46.14%, #B22234 53.83%, white 53.83%, white 61.52%, #B22234 61.52%, #B22234 69.21%, white 69.21%, white 76.9%, #B22234 76.9%, #B22234 84.59%, white 84.59%, white 92.28%, #B22234 92.28%, #B22234 100%); position: relative; }
.flag-us::before { content: ''; position: absolute; top: 0; left: 0; width: 40%; height: 53.85%; background: #002868; z-index: 1; }
.flag-argentina { background: linear-gradient(to bottom, #74ACDF 33.33%, white 33.33%, white 66.67%, #74ACDF 66.67%); position: relative; display: flex; align-items: center; justify-content: center; }
.flag-argentina::after { content: '☀️'; font-size: 12px; color: #FDB813; position: absolute; line-height: 1; text-shadow: 0 0 1px white; }

/* --- Mode Selector Styles --- */
.mode-selector-container {
    display: flex;
    justify-content: center;
    gap: 10px;
    margin-bottom: 15px;
    background-color: rgba(0, 0, 0, 0.05);
    padding: 8px;
    border-radius: var(--border-radius-buttons);
}
.mode-btn {
    font-family: 'Nunito', sans-serif;
    font-weight: 800;
    font-size: 1em;
    padding: 8px 20px;
    border: 2px solid transparent;
    border-radius: 20px;
    cursor: pointer;
    transition: all 0.3s ease;
    background-color: var(--text-light);
    color: var(--text-dark);
    box-shadow: var(--shadow-soft);
}
.mode-btn:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-strong);
}
.mode-btn.active {
    background-color: var(--primary-pink);
    color: var(--text-light);
    border-color: rgba(255, 255, 255, 0.8);
    box-shadow: var(--shadow-strong);
}


#timerDisplay, #challengeTypeDisplay {
    font-weight: 800;
    padding: 6px 15px;
    border-radius: 20px;
    color: var(--text-light);
    box-shadow: var(--shadow-soft);
    text-align: center;
    border: 2px solid rgba(255,255,255,0.7);
    font-size: 1em;
    margin: 8px auto; /* Centered margin */
    width: 100%;
    max-width: 400px; /* Give it a max-width */
    display: none; /* Hidden by default */
    text-shadow: 1px 1px 2px rgba(0,0,0,0.3);
    cursor: pointer;
}
#timerDisplay { background-color: var(--button-orange); }
#challengeTypeDisplay { background-color: var(--button-purple); }

.difficulty-display-container { 
    padding: 8px 10px 10px 10px;
    margin-top: 5px;
}

.difficulty-indicator { 
    background: linear-gradient(135deg, #ff9a9e 0%, #fad0c4 99%, #fad0c4 100%); 
    border-radius: 15px;
    padding: 6px 12px;
    box-shadow: var(--shadow-soft); 
    display: flex; 
    align-items: center; 
    gap: 10px;
    border: 2px solid white;
    min-height: 35px;
}

.level-badge { 
    background-color: var(--text-light); 
    color: var(--primary-pink); 
    border-radius: 12px;
    padding: 3px 8px;
    text-align: center; 
    font-weight: 800; 
    box-shadow: var(--shadow-inset); 
    display: flex; 
    flex-direction: column; 
    justify-content: center; 
    line-height: 1.1;
    min-width: 60px;
}

.level-text { 
    font-size: 0.75em;
    display: block; 
}

.level-name { 
    font-size: 1em;
    font-weight: 900; 
    color: var(--text-dark); 
}

.progress-bar { 
    flex-grow: 1; 
    height: 16px;
    background-color: rgba(255, 255, 255, 0.5); 
    border-radius: 8px;
    border: 2px solid rgba(255, 255, 255, 0.8); 
    overflow: hidden; 
    box-shadow: var(--shadow-inset); 
}

.progress-fill { 
    width: 0%; 
    height: 100%; 
    background: linear-gradient(90deg, #66d9e8 0%, #94d82d 100%); 
    border-radius: 6px;
    transition: width 0.5s ease-in-out; 
}

.game-core-layout {
    display: grid;
    grid-template-areas:
        "palette"
        "building"
        "solutions";
    gap: 25px;
}
.block-palette-container { grid-area: palette; }
.building-area-container { 
    grid-area: building; 
    position: relative; /* Positioning context for the dice icon */
}
.found-solutions-container { grid-area: solutions; }

#newTargetIcon {
    position: absolute;
    top: 50%;
    right: -20px;
    transform: translateY(-50%);
    z-index: 20;
    cursor: pointer;
    font-size: 2.2em;
    transition: transform 0.3s;
    background-color: #fff;
    width: 50px;
    height: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    box-shadow: var(--shadow-strong);
    border: 3px solid var(--button-orange);
}
#newTargetIcon:hover {
    transform: translateY(-50%) rotate(180deg) scale(1.1);
}


.block-palette-container, .building-area-container, .found-solutions-container { 
    background-color: rgba(255, 255, 255, 0.6); 
    padding: 20px; 
    border-radius: var(--border-radius-main); 
    box-shadow: var(--shadow-inset), 0 2px 8px rgba(0,0,0,0.05); 
    border: 1px solid rgba(255,255,255,0.3);
}

.section-title { font-size: 1.3em; margin-bottom: 15px; color: var(--text-dark); text-align: center; font-weight: 800; display: flex; align-items: center; justify-content: center; }
.section-title img { width: 28px; height: 28px; margin-right: 8px; }
.available-blocks { display: flex; justify-content: center; align-items: flex-end; flex-wrap: wrap; gap: 12px; min-height: calc(var(--lego-height) + var(--stud-height) + 5px); padding-bottom: var(--stud-height); }
.lego-block { 
    min-width: var(--lego-unit-size); 
    height: var(--lego-height); 
    border-radius: var(--border-radius-blocks); 
    display: flex; 
    align-items: center; 
    justify-content: center; 
    cursor: grab; 
    color: var(--text-light); 
    font-size: 1.8em; 
    font-weight: 900; 
    text-shadow: 1px 1px 3px rgba(0,0,0,0.4); 
    transition: transform 0.3s cubic-bezier(0.68, -0.55, 0.265, 1.55);
    box-shadow: 0 3px 5px rgba(0,0,0,0.2), var(--shadow-inset); 
    border: 2px solid rgba(255,255,255,0.5); 
    user-select: none; 
    position: relative; 
    margin-top: var(--stud-height); 
    padding: 0 10px; 
    background-color: var(--button-purple); 
}
.lego-block:hover { transform: translateY(calc(-3px - var(--stud-height))) scale(1.03); box-shadow: 0 5px 10px rgba(0,0,0,0.25), var(--shadow-inset); }
.lego-block:active { 
    cursor: grabbing; 
    animation: jelly-squeeze 0.5s ease;
}
.lego-block.dragging { opacity: 0.6; transform: rotate(4deg) scale(1.05) translateY(calc(-1 * var(--stud-height))); }
/* FIX: Added .dark-text class definition */
.dark-text {
    color: var(--text-dark);
    text-shadow: 1px 1px 2px rgba(255,255,255,0.8);
}
.block-val-c1 { background-color: var(--block-c1); } .block-val-c2 { background-color: var(--block-c2); } .block-val-c3 { background-color: var(--block-c3); } .block-val-c4 { background-color: var(--block-c4); } .block-val-c5 { background-color: var(--block-c5); } .block-val-c6 { background-color: var(--block-c6); } .block-val-c7 { background-color: var(--block-c7); } .block-val-c8 { background-color: var(--block-c8); }
.stud-container { position: absolute; top: calc(-1 * var(--stud-height) - (var(--stud-border-width) * 2)); left: 5px; right: 5px; height: var(--stud-diameter); display: flex; justify-content: space-around; align-items: center; z-index: 1; }
.stud { min-width: var(--stud-diameter); min-height: var(--stud-diameter); background-color: inherit; border: var(--stud-border-width) solid rgba(0,0,0,0.2); border-radius: var(--border-radius-studs); box-shadow: inset 0 -1px 1px rgba(0,0,0,0.15), inset 0 1px 1px rgba(255,255,255,0.3); filter: brightness(110%); }

.building-area { flex-grow: 1; min-height: calc(var(--lego-height) + var(--stud-height) + 40px); background-color: rgba(255, 255, 255, 0.3); border: 3px dashed var(--button-purple); border-radius: var(--border-radius-main); display: flex; align-items: center; justify-content: flex-start; padding: 15px; position: relative; transition: all 0.3s ease; flex-wrap: wrap; gap: 8px; padding-top: calc(var(--stud-height) + 5px); }
.building-area.drag-over { background-color: rgba(200, 220, 255, 0.5); border-color: var(--primary-pink); border-style: solid; }

.building-area-placeholder {
    width: 100%;
    height: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    color: #a0a0a0;
    font-weight: 700;
    text-align: center;
    font-size: 1.1em;
}

.building-area-placeholder img {
    width: 40px;
    margin-bottom: 10px;
    opacity: 0.7;
}

.building-area .lego-block { font-size: 1.5em; height: calc(var(--lego-height) * 0.9); cursor: pointer; margin-top: var(--stud-height); }

.plus-sign, .operation-sign { font-size: 2em; font-weight: 700; color: var(--text-dark); align-self: center; }

.equation-rhs {
    margin-left: auto;
    display: flex;
    align-items: center;
    gap: 8px;
    padding-left: 15px;
}
.target-number-in-builder {
    font-size: 2.2em;
    font-weight: 900;
    color: var(--button-blue);
    text-shadow: 1px 1px 2px rgba(0,0,0,0.2);
}
.equals-btn, .clear-btn { font-size: 2.2em; font-weight: 900; background: none; border: none; cursor: pointer; padding: 0 10px; transition: transform 0.2s ease; align-self: center; }
.equals-btn { color: var(--primary-pink); }
.clear-btn { color: var(--button-orange); font-size: 1.8em; }
.equals-btn:hover, .clear-btn:hover { transform: scale(1.2); }

/* --- Subtraction Specific Styles --- */
.subtraction-target-display {
    text-align: center;
    margin-bottom: 15px;
    padding: 10px;
    background: rgba(255, 255, 255, 0.5);
    border-radius: var(--border-radius-blocks);
}

.subtraction-target-display .start-number {
    font-size: 1.8em;
    font-weight: 900;
    color: var(--button-blue);
}
.subtraction-target-display .goal-number {
    font-size: 1.2em;
    font-weight: 700;
    color: var(--primary-pink);
}
.subtraction-target-display .arrow {
    font-size: 1.5em;
    color: var(--text-dark);
    margin: 0 10px;
}

.start-value-block {
    height: var(--lego-height);
    padding: 0 20px;
    background-color: var(--button-blue);
    color: var(--text-light);
    font-size: 1.8em;
    font-weight: 900;
    text-shadow: 1px 1px 3px rgba(0,0,0,0.4);
    border-radius: var(--border-radius-blocks);
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-soft);
}

.concrete-block-container {
    display: flex;
    flex-wrap: wrap;
    gap: 5px;
    padding: 10px;
    border-radius: var(--border-radius-blocks);
    background-color: rgba(0,0,0,0.05);
}
.concrete-block {
    width: 20px;
    height: 20px;
    background-color: var(--button-green);
    border-radius: 4px;
    transition: all 0.3s ease;
}
.concrete-block.removed {
    background-color: var(--removal-red);
    transform: scale(0.5);
    opacity: 0.5;
}
.concrete-block.hole {
    background-color: transparent;
    border: 2px dashed rgba(0,0,0,0.2);
}

@keyframes block-removal {
    0% { 
        transform: scale(1); 
        opacity: 1; 
    }
    50% { 
        transform: scale(1.2) rotate(10deg); 
        background-color: var(--removal-red); 
    }
    100% { 
        transform: scale(0); 
        opacity: 0; 
    }
}

.removed-animation {
    animation: block-removal 0.6s ease-out forwards;
}

/* --- End Subtraction Styles --- */

@keyframes throb {
    0% { transform: scale(1); }
    50% { transform: scale(1.15); }
    100% { transform: scale(1); }
}
.equals-btn.ready-to-submit {
    animation: throb 1.5s infinite ease-in-out;
}


.found-solutions-list { flex-grow: 1; max-height: 150px; overflow-y: auto; padding: 10px; background: rgba(255,255,255,0.3); border-radius: var(--border-radius-blocks); border: 2px dashed var(--button-blue); }
.found-solution-item { background-color: var(--text-light); padding: 8px 12px; margin-bottom: 6px; border-radius: var(--border-radius-blocks); border: 2px solid var(--button-green); font-size: 1em; color: var(--text-dark); font-weight: 700; text-align: center; box-shadow: 0 1px 3px rgba(0,0,0,0.1); }
.found-solution-item:last-child { margin-bottom: 0; }

.feedback { text-align: center; font-size: 1.2em; font-weight: 700; min-height: 50px; padding: 10px 15px; border-radius: var(--border-radius-main); margin-top: 20px; display: flex; align-items: center; justify-content: center; transition: all 0.3s ease; color: var(--text-light); box-shadow: var(--shadow-soft); flex-direction: column; gap: 10px;}
.feedback.success { background-color: var(--button-green); }
.feedback.error { background-color: var(--button-red); animation: shake 0.5s ease; }
.feedback.info { background-color: var(--button-blue); }
.feedback.all-found, .feedback.level-change { background-color: var(--primary-pink); font-size: 1.3em; font-weight: 800; animation: successPulse 1.2s infinite alternate; }
.feedback.hint { background-color: var(--button-purple); font-style: italic; }
.feedback.choice { background-color: var(--bg-color-dark); color: var(--text-dark); }
.choice-buttons { display: flex; gap: 15px; }
.choice-buttons button { font-family: 'Nunito', sans-serif; font-weight: 800; font-size: 0.9em; padding: 8px 15px; border-radius: var(--border-radius-buttons); border: none; color: var(--text-light); cursor: pointer; box-shadow: var(--shadow-soft); transition: all 0.2s ease; }
.choice-buttons button#confirm-decrease { background-color: var(--button-green); }
.choice-buttons button#decline-decrease { background-color: var(--button-red); }
.choice-buttons button:hover { transform: translateY(-2px); box-shadow: var(--shadow-strong); }

@keyframes successPulse { from { transform: scale(1); box-shadow: 0 0 10px rgba(255,255,255,0.3); } to { transform: scale(1.03); box-shadow: 0 0 20px var(--primary-pink), 0 0 30px var(--primary-pink); } }
@keyframes shake { 0%, 100% { transform: translateX(0); } 20%, 60% { transform: translateX(-8px); } 40%, 80% { transform: translateX(8px); } }

.shake-animation { animation: shake 0.5s ease; }

.celebration { position: fixed; top: 0; left: 0; width: 100%; height: 100vh; overflow: hidden; pointer-events: none; z-index: 3000; }
.confetti { position: absolute; width: 10px; height: 20px; opacity: 0; animation: confettiFall 5s linear infinite; }
.confetti.c1 { background: var(--block-c1); } .confetti.c2 { background: var(--block-c2); } .confetti.c3 { background: var(--block-c6); } .confetti.c4 { background: var(--block-c3); } .confetti.c5 { background: var(--block-c4); } .confetti.c6 { background: var(--button-purple); }
@keyframes confettiFall { 0% { transform: translateY(-10vh) rotateZ(0deg) rotateY(0deg); opacity: 1; } 100% { transform: translateY(110vh) rotateZ(720deg) rotateY(360deg); opacity: 0; } }

.dashboard-modal { display: none; position: fixed; z-index: 1000; left: 0; top: 0; width: 100%; height: 100%; overflow: auto; background-color: rgba(0,0,0,0.5); backdrop-filter: blur(5px); animation: fadeIn 0.3s ease; }
.dashboard-modal-content { background-color: #fefefe; margin: 5% auto; padding: 25px; border: 3px solid var(--button-purple); border-radius: var(--border-radius-main); width: 90%; max-width: 800px; box-shadow: var(--shadow-strong); position: relative; }
.dashboard-header { display: flex; justify-content: space-between; align-items: center; padding-bottom: 15px; border-bottom: 2px solid var(--bg-color-medium); margin-bottom: 20px; }
.dashboard-title { font-size: 2em; font-weight: 800; color: var(--button-purple); }
.dashboard-close { color: var(--button-red); font-size: 2.5em; font-weight: bold; line-height: 1; cursor: pointer; transition: transform 0.2s; }
.dashboard-close:hover { transform: scale(1.1); }
.dashboard-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 20px; }
.stat-card { background: var(--bg-color-light); padding: 15px; border-radius: var(--border-radius-blocks); border: 1px solid var(--bg-color-dark); text-align: center; }
.stat-title { font-weight: 700; color: var(--text-dark); margin-bottom: 5px; }
.stat-value { font-weight: 800; font-size: 1.8em; color: var(--primary-pink); }
.stat-extra { font-size: 0.9em; color: #888; }

@media (max-width: 768px) {
    .game-container { 
        padding: 15px 12px;
        max-width: 100%;
    }
    
    .game-header { 
        padding-top: 30px; 
        margin-bottom: 15px;
    }
    
    .unicorn-main { width: 120px; left: -30px; top: -40px; }
    .rainbow-corner { width: 100px; right: -20px; top: -30px; }
    .game-title { font-size: 2.2em; }
    
    #newTargetIcon { right: -15px; width: 45px; height: 45px; font-size: 1.8em; }
    
    #challengeTypeDisplay, #timerDisplay {
        margin: 6px auto;
        font-size: 0.95em;
        padding: 5px 12px;
    }
    
    .difficulty-display-container { 
        padding: 5px 8px 8px 8px; 
        margin-top: 6px;
    }
    
    .difficulty-indicator {
        padding: 4px 10px;
        gap: 8px;
        min-height: 32px;
    }
    
    .level-badge { 
        padding: 2px 6px;
        min-width: 55px;
    }
    
    .level-text { 
        font-size: 0.7em; 
    }
    
    .level-name { 
        font-size: 0.95em; 
    }
    
    .progress-bar { 
        height: 14px; 
    }
    
    .section-title { font-size: 1.1em; }
    :root { 
        --lego-unit-size: 50px;
        --lego-height: 60px;
        --stud-diameter: 14px;
        --stud-height: 4px;
    }
    .lego-block { 
        font-size: 1.8em;
        font-weight: 900;
        text-shadow: 1px 1px 3px rgba(0,0,0,0.4);
    }
    .building-area .lego-block { 
        font-size: 1.6em;
        font-weight: 900;
        text-shadow: 1px 1px 3px rgba(0,0,0,0.4);
    }
    .feedback { font-size: 1.1em; }
    .dashboard-modal-content { width: 95%; margin: 10% auto; }
}

@media (max-width: 500px) {
    #newTargetIcon { right: -10px; width: 40px; height: 40px; font-size: 1.6em; }
    
    #challengeTypeDisplay, #timerDisplay {
        margin: 4px auto;
        font-size: 0.9em;
        padding: 4px 10px;
    }
    
    .difficulty-display-container { 
        padding: 3px 8px 8px 8px; 
        margin-top: 4px;
    }
    
    .difficulty-indicator {
        padding: 3px 8px;
        gap: 6px;
        min-height: 28px;
    }
    
    .level-badge { 
        padding: 2px 5px;
        min-width: 50px;
    }
    
    .level-text { 
        font-size: 0.65em; 
    }
    
    .level-name { 
        font-size: 0.9em; 
    }
    
    .progress-bar { 
        height: 12px; 
    }
    
    .game-container { padding: 15px 10px; }
    .game-header { padding-top: 20px; margin-bottom: 15px; }
    .unicorn-main { width: 90px; left: -15px; top: -25px; }
    .rainbow-corner { width: 70px; right: -10px; top: -15px; }
    .game-title { font-size: 1.8em; }
    .language-switcher { top: 10px; right: 10px; }
    .language-btn { width: 35px; height: 24px; }
    
    :root { 
        --lego-unit-size: 45px;
        --lego-height: 55px;
        --stud-diameter: 12px;
        --stud-height: 3px;
    }
    
    .lego-block { 
        font-size: 1.6em;
        font-weight: 900;
        text-shadow: 1px 1px 3px rgba(0,0,0,0.5);
    }
    
    .building-area .lego-block { 
        font-size: 1.4em;
        font-weight: 900;
    }
}

/* --- NEW STYLES --- */

@keyframes jelly-squeeze {
    0%, 100% { transform: scale(1, 1); }
    30% { transform: scale(1.25, 0.75); }
    40% { transform: scale(0.75, 1.25); }
    60% { transform: scale(1.15, 0.85); }
}

.number-floater {
    position: absolute;
    right: 10px;
    top: -20px;
    font-size: 1.5em;
    font-weight: 800;
    color: var(--button-green);
    animation: float-up 1s ease-out forwards;
    pointer-events: none;
}

@keyframes float-up {
    0% { transform: translateY(0); opacity: 1; }
    100% { transform: translateY(-50px); opacity: 0; }
}

#hint-area {
    margin: 15px auto;
    padding: 10px;
    background: rgba(255, 255, 255, 0.7);
    border-radius: var(--border-radius-blocks);
    text-align: center;
}

.number-breakdown-hint {
    font-weight: 700;
    color: var(--text-dark);
    display: flex;
    gap: 5px;
    align-items: center;
    justify-content: center;
    flex-wrap: wrap;
}

.number-breakdown-hint span {
    padding: 5px 10px;
    border-radius: 5px;
    color: var(--text-light);
    font-size: 0.9em;
}

.ten-block {
    background-color: var(--button-blue);
}

.one-block {
    background-color: var(--primary-pink);
}

#streak-display {
    position: absolute;
    top: 10px;
    left: 10px;
    font-size: 2.5em;
    z-index: 100;
    animation: pop-in 0.5s ease;
    text-shadow: 2px 2px 5px rgba(0,0,0,0.3);
}

@keyframes pop-in {
    0% { transform: scale(0); }
    70% { transform: scale(1.2); }
    100% { transform: scale(1); }
}

/* --- Explanation Modal Styles --- */
.explanation-modal {
    display: none;
    position: fixed;
    z-index: 2000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    overflow: auto;
    background-color: rgba(0,0,0,0.5);
    backdrop-filter: blur(5px);
    animation: fadeIn 0.3s ease;
}

.explanation-modal-content {
    background-color: #fefefe;
    margin: 20% auto;
    padding: 25px;
    border: 3px solid var(--button-purple);
    border-radius: var(--border-radius-main);
    width: 90%;
    max-width: 500px;
    box-shadow: var(--shadow-strong);
    position: relative;
    text-align: center;
}

.explanation-modal-close {
    color: var(--button-red);
    position: absolute;
    top: 5px;
    right: 15px;
    font-size: 2.5em;
    font-weight: bold;
    line-height: 1;
    cursor: pointer;
    transition: transform 0.2s;
}

.explanation-modal-close:hover {
    transform: scale(1.1);
}

.explanation-title {
    font-size: 1.8em;
    font-weight: 800;
    color: var(--button-purple);
    margin-bottom: 15px;
}

.explanation-text {
    font-size: 1.1em;
    color: var(--text-dark);
}